Home / 1,230,741.72-1,698,419.88-686,871.54

Finding the Fourth Proportional to 1,230,741.72, 1,698,419.88 and 686,871.54

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Solution

The fourth proportional to 1,230,741.72, 1,698,419.88 and 686,871.54 is: 947,880.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,741.72 : 1,698,419.88 = 686,871.54 : x
  2. Step 2: Convert to fraction form
    1,230,741.72/1,698,419.88 = 686,871.54/x
  3. Step 3: Cross multiply
    1,230,741.72x = 1,698,419.88 × 686,871.54
  4. Step 4: Simplify right side
    1,230,741.72x = 1,166,596,278,542.22
  5. Step 5: Solve for x
    x = 1,166,596,278,542.22/1,230,741.72
  6. Step 6: Final answer
    x = 947,880.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.